How does this skill help prevent reentrancy attacks?

It guides you through implementing the Checks-Effects-Interactions pattern and provides examples for using OpenZeppelin's ReentrancyGuard to prevent recursive calling of sensitive functions.

Is this skill compatible with modern Solidity versions?

Yes, it specifically addresses built-in overflow/underflow checks in Solidity 0.8.0+ while providing SafeMath alternatives for older versions.

Can this skill help reduce transaction costs?

Yes, it includes advanced gas optimization techniques such as variable packing in storage slots and using calldata instead of memory for function arguments.

Is this a replacement for a professional security audit?

No, while this skill helps you implement best practices and catch common bugs, all production-level smart contracts should still undergo a third-party professional audit.

Solidity Security Best Practices

Name: Solidity Security Best Practices
Author: HermeticOrmus

byHermeticOrmus

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Security & Testing

Master smart contract security and vulnerability prevention for secure Solidity development.

About

The Solidity Security skill empowers developers to build robust, attack-resistant smart contracts by integrating industry-standard security patterns directly into their workflow. It provides comprehensive guidance on identifying and fixing critical vulnerabilities such as reentrancy, integer overflows, and front-running. By utilizing proven patterns like Checks-Effects-Interactions and Pull-over-Push, this skill helps developers write production-grade code, optimize gas usage, and prepare blockchain applications for professional security audits.

Key Features

Vulnerability detection for reentrancy, overflows, and access control
Implementation of secure coding patterns (Checks-Effects-Interactions)
Gas optimization techniques including storage packing and calldata usage
Emergency stop (Circuit Breaker) and Pausable implementation guides
Security-focused testing templates using Hardhat and Chai
1 GitHub stars

Use Cases

Conducting internal security audits of smart contracts before deployment
Refactoring legacy Solidity code to meet modern security standards
Implementing secure fund management for DeFi protocols and DAOs

About

Key Features

Vulnerability detection for reentrancy, overflows, and access control
Implementation of secure coding patterns (Checks-Effects-Interactions)
Gas optimization techniques including storage packing and calldata usage
Emergency stop (Circuit Breaker) and Pausable implementation guides
Security-focused testing templates using Hardhat and Chai
1 GitHub stars

Use Cases

Conducting internal security audits of smart contracts before deployment
Refactoring legacy Solidity code to meet modern security standards
Implementing secure fund management for DeFi protocols and DAOs